Update hasGuaranteedResult and hasGuaranteedAddressResult

Author: meg-gupta

include/swift/AST/Types.h

@@ -5397,13 +5397,12 @@ class SILFunctionType final
   }
 
   bool hasGuaranteedAddressResult() const {
-    for (auto &result : getResults()) {
-      if (result.isGuaranteedAddressResult()) {
-        return true;
-      }
+    if (getNumResults() != 1) {
+      return false;
     }
-    return false;
+    return getResults()[0].isGuaranteedAddressResult();
   }
+
   struct IndirectFormalResultFilter {
     bool operator()(SILResultInfo result) const {
       return result.isFormalIndirect();

include/swift/SIL/SILFunctionConventions.h

@@ -299,21 +299,19 @@ class SILFunctionConventions {
   }
 
   bool hasGuaranteedResult() const {
-    for (auto result : funcTy->getResults()) {
-      if (result.getConvention() == ResultConvention::Guaranteed) {
-        return true;
-      }
+    if (funcTy->getNumResults() != 1) {
+      return false;
     }
-    return false;
+    return funcTy->getResults()[0].getConvention() ==
+           ResultConvention::Guaranteed;
   }
 
   bool hasGuaranteedAddressResult() const {
-    for (auto result : funcTy->getResults()) {
-      if (result.getConvention() == ResultConvention::GuaranteedAddress) {
-        return true;
-      }
+    if (funcTy->getNumResults() != 1) {
+      return false;
     }
-    return false;
+    return funcTy->getResults()[0].getConvention() ==
+           ResultConvention::GuaranteedAddress;
   }
 
   struct SILResultTypeFunc;